Changes in Accumulated Other Comprehensive Income (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Aug. 01, 2015	Aug. 02, 2014	Aug. 01, 2015	Aug. 02, 2014
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning Balance Accumulated other comprehensive income, net of tax		$ 727	$ 786	$ 778
Other Comprehensive Income Loss Before Reclassifications Net Of Tax		213		181
Reclassification From Accumulated Other Comprehensive Income Current Period Net Of Tax		(126)		(145)
Unrealized gain on available-for-sale securities, net of deferred income taxes	$ 98	87	(234)	36
Ending Balance Accumulated other comprehensive income, net of tax	552	$ 814	552	$ 814
ChangeInUnrealizedGainsOnAvailableForSaleSecuritiesMember [Member]
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning Balance Accumulated other comprehensive income, net of tax	454		786
Other Comprehensive Income Loss Before Reclassifications Net Of Tax	102		(382)
Reclassification From Accumulated Other Comprehensive Income Current Period Net Of Tax	(4)		148
Unrealized gain on available-for-sale securities, net of deferred income taxes	98		(234)
Ending Balance Accumulated other comprehensive income, net of tax	$ 552		$ 552

- Definition

Accumulated change in equity from transactions and other events and circumstances from non-owner sources, net of tax effect, at period end. Excludes Net Income (Loss), and accumulated changes in equity from transactions resulting from investments by owners and distributions to owners. Includes foreign currency translation items, certain pension adjustments, unrealized gains and losses on certain investments in debt and equity securities, other than temporary impairment (OTTI) losses related to factors other than credit losses on available-for-sale and held-to-maturity debt securities that an entity does not intend to sell and it is not more likely than not that the entity will be required to sell before recovery of the amortized cost basis, as well as changes in the fair value of derivatives related to the effective portion of a designated cash flow hedge.

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